Tears of Heaven (2014)

Both Korean dram, the male lead is from rich and wealthy family. Family has all planned for him, but he pick and fall in love with a poor hard working woman.

In both dramas, the mother abandoned the daughter and remarried to a wealthy family after that.

In both dramas, the mother abandoned her daughter and prefer the child they brought up to her biological daughter. Both female leads decided to take revenge on their mothers. Romance involved.